Description:
We compare and contrast novel techniques for the fabrication of chirped broadband fiber Bragg gratings by ultrafast laser inscription. These methods enable the inscription of gratings with flexible pe
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The recent demonstrations of ultrafast mid-infrared fiber lasers emitting sub-picosecond pulses at 2.8 μm have created an exciting potential for a range of applications including mid-infrared frequenc
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The standard technique commonly utilized to introduce large amounts of negative group delay dispersion (GDD) into the beam path of ultrashort laser pulses with low insertion losses is the use of a pai
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We report on the inscription of optical waveguides into crystalline bismuth germanate (Bi₄Ge₃O₁₂, BGO) via the femtosecond laser direct-write (FLDW) technique. We found that by utilizing femtosecond l
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Description:
The thermal poling technique was applied to optical waveguides embedded in a commercial boro-aluminosilicate glass, resulting in high levels of induced second-order optical nonlinearity. The waveguide
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Utilizing a recently developed two-step fabrication process, we have experimentally demonstrated what is to the best of our knowledge the first ever integrated antiresonant reflecting optical waveguid
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Description:
Fluorozirconate glasses, such as ZBLAN (ZrF4-BaF2-LaF3- AlF3-NaF), have a high infrared transparency and large rare-earth solubility, which makes them an attractive platform for highly efficient and c
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Description:
We report the first Yb:ZBLAN and Yb:IOG10 waveguide lasers fabricated by the fs-laser direct-writing technique. Pulses from a Titanium- Sapphire laser oscillator with 5.1 MHz repetition rate were util
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Description:
We present a novel process to fabricate high index contrast waveguides in boro-aluminosilicate glass based on differential thermal post-annealing. Firstly, large high index contrast multimode waveguid
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Metallic gratings were fabricated using high energy laser interference lithography with a frequency tripled Nd:YAG nanosecond laser. The grating structures were first recorded in a photosensitive laye
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Description:
We report on the fabrication and characterization of composite multimode waveguide structures that consist of a stack of single-mode waveguides fabricated by ultrafast laser inscription. We explore 2
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